1.A city's population grows at an annual rate of 4%, with an extra 1% yearly increase due to incoming job seekers. What is the total percentage growth in the population after 2 years?
2.A principal amount grows to Rs. 1344 in two years under simple interest. What is the compound interest on the same principal, at the same interest rate, over the same duration?
3.A lender provides a loan of Rs. 2000 for a period of six months at an annual interest rate of 20%. If the interest is compounded quarterly, what will be the total amount payable at the end of the term?
4.What is the additional amount earned on Rs. 20,000 after two years when invested at 20% per annum compound interest compounded semi-annually compared to the same interest rate compounded annually?
5.A village's population grew by 10% during the first year and then declined by 10% in the following year. If the population after the second year is 7,920, what was the initial population at the start?
6.Sehar lent Shazia Rs.1250 for 2 years at an annual compound interest rate of 4%. What would be the loss to Sehar if the interest was calculated using simple interest instead for the same period and rate?
7.Rajan took a loan of Rs.4000 at an annual compound interest rate of 5%. After 2 years, he paid back Rs.2210. He settled the remaining amount along with interest after another 2 years. What is the total interest he paid over the entire period?
8.An amount increases annually by one-eighth of its current value. If the present amount is Rs. 64,000, what will be its value after two years?
9.What will be the total amount on a principal of Rs.8000 after 9 months at an annual interest rate of 20%, compounded quarterly?
10.If a principal amount is invested at compound interest, and it grows to Rs. 8820 in 2 years and Rs. 9261 in 3 years, what was the original principal?
11.If the difference between the compound interest compounded yearly and the simple interest for 2 years at an annual rate of 20% is Rs.144, what is the principal amount?
12.Calculate the principal amount if the difference between the compound interest and simple interest on it for 2 years at an annual rate of 10% is Rs. 15.
13.A principal amount is invested at a compound interest rate of 20% for 2 years. If the interest is compounded semi-annually instead of annually, the total interest earned increases by Rs. 482. What is the original principal?
14.What is the principal amount if the difference between compound interest and simple interest on it for 3 years at an annual rate of 6 2/3% is Rs. 184?
15.If the difference between simple interest and compound interest on Rs. 5000 for 2 years is Rs. 72, what is the annual interest rate?
16.What is the minimum number of full years required for an amount invested at 25% compound interest to exceed twice its original value?
17.A property's value declines annually by 6.25% of its value at the start of each year. If its worth after 3 years is Rs. 21,093, what was the property's value at the beginning of the first year?
18.What is the principal amount if the compound interest at 5% per annum results in a total of Rs.441 after 2 years?
19.A principal amount invested at compound interest grows to Rs. 2420 after 2 years and Rs. 2662 after 3 years. What is the annual interest rate?
20.What is the ratio of simple interest to compound interest for two identical sums invested at an 8% annual interest rate for 3 years in SBP?